An optical fiber sensor includes an optical fiber. The optical fiber includes a cladding having a cladding refractive index, and a plurality of fiber cores embedded in the cladding and extending along a longitudinal axis of the optical fiber. The plurality of fiber cores include a first subset of at least one first fiber core and a second subset of at least one second fiber core. The at least one first fiber core has a first core refractive index different from the cladding refractive index and a first core radius in a direction transverse to the longitudinal axis. The at least one second fiber core has a second core refractive index different from the cladding refractive index and a second core radius transverse to the longitudinal axis. The second core refractive index and the second core radius differ from the first core refractive index and the first core radius such that a temperature sensitivity of the at least one second fiber core differs from the temperature sensitivity of the first fiber core.

A method for manufacturing a semiconductor structure or a photonic device, wherein the method comprises the steps of: providing a silicon nitride patterned layer over a carrier substrate; providing a first layer of a conformal oxide on the silicon nitride patterned layer such that it fully covers the silicon nitride patterned layer; and planarizing the first layer of conformal oxide to a predetermined thickness above the silicon nitride patterned layer to form a planarizing oxide layer. After the step of planarizing the first layer of conformal oxide, the method further comprises steps of clearing the silicon nitride patterned layer to form a dished silicon nitride patterned layer with a dishing height; and subsequently providing a second layer of a conformal oxide on or over the dished silicon nitride layer.

A lighting assembly with a single edge lit optical configuration produces various asymmetric light distributions which provide targeted control of light output with peak intensity that is non-normal to the light guide output face. The compact form factor of the lighting assembly embodiments having narrow width are particularly well-suited for use in linear lighting applications requiring suspended, surface and recessed installations typically used to illuminate walls, floors and/or ceilings. The lighting assembly can also be selectively configured and oriented during assembly and installation to achieve various lighting distributions. Optical components within the lighting assembly are typically positioned and retained in optical alignment with internal support features of a linear housing. The optical configuration typically includes LED board, light guide, and one or more reflectors, and an optically transmitting component providing further control of the lighting distributions and a broader range of design choices. A variety of asymmetrical and symmetrical light distributions can be achieved with one or more peak intensities. Further embodiments utilize selective alignment of the light guide with one or more reflectors to achieve different light distributions.

A telecommunications rack system includes a first element defining splice locations and a second element defining adapters for receiving connectorized cabling, wherein the first and second elements are positioned on the same rack. A first end of a fiber optic pigtail is spliced at and extends from the splice locations of the first element. A second end is connectorized with a fiber optic connector that is coupled to an adapter of the second element. The pigtail extends between the first and second elements. A cable manager is removably mounted at the side of at least one of the first and second elements. The cable manager defines a U-shaped passage including ends that open toward one end of the elements and a closed end opposite the open ends. The U-shaped passage defines cable pass-throughs adjacent the closed end for transitioning cables from inside the U-shaped passage to an exterior thereof, wherein the connectorized pigtail is passed at least through a portion of the U-shaped passage and out the cable pass-through going from the first element to the second element.

A light-emitting seat, comprising a chair frame, a furniture light-emitting assembly, and a skin layer. The furniture light-emitting assembly comprises a fixing part, a strip light, a light guide material layer, and a power supply assembly. The strip light is disposed on the fixing part, the light guide material layer covers the strip light, and the power supply assembly is electrically connected to the strip light. In addition, the fixing part of the furniture light-emitting assembly may cover the chair frame, and the skin layer covers the chair frame and the furniture light-emitting assembly; or, the fixing part may be disposed on the light guide material layer, and the light guide material layer covers the chair frame, the skin layer covers the chair frame and the furniture light-emitting assembly. And, at least an area of the skin layer covering the furniture light-emitting assembly is a light-transmitting material.

A single edge lit lighting module is disclosed which produces tailored light distributions valuable in many illumination applications. The lighting module comprises a unique light scattering optical element which is aligned with one or more LED light sources along one of its edges and works in combination with configured reflective surfaces. Light distributions attainable using the invention include, but are not limited to, symmetric and asymmetric bi-lobed “batwing” distributions for wide area direct and indirect lighting, and tilted or asymmetric distributions for perimeter lighting. It is also possible to achieve more rounded and symmetric distributions by an additional diffuser as a cover lens. The invention's unique single edge lit construction provides the means for achieving the lighting distributions without the need for conventional two lit edges and within a compact form factor with narrow width. The invention is particularly well-suited for linear lighting fixtures that are surface mounted, suspended or recessed. Various embodiments also provide means for adjusting light distributions dynamically to control light output characteristics by controlling the input signals to the LED board included in the assembly.

A coupon wafer comprising a device coupon (110) for use in a micro-transfer printing process used to fabricate an optoelectronic device. The coupon wafer includes a wafer substrate (124), and the device coupon (110) is attached to the wafer substrate via a tether (122) and the tether (122) is formed from a dielectric material.

Augmented reality (AR) glass is provided. The AR glass includes a first light source which emits display light for displaying an AR image, an eye tracking (ET) sensor for detecting reflected light reflected from the eye of a user, glass, which includes a display waveguide for guiding the display light, emitted from the first light source, to a display area of a see-through display, and an ET waveguide for guiding the reflected light to the ET sensor, and a processor electrically connected to the first light source and the ET sensor, wherein the processor controls the first light source so as to emit the display light, and tracks, through the ET sensor, the gaze of the user on the basis of the detected reflected light.

The invention relates to a waveguide having a partially transparent incoupling portion, having a decoupling portion which is spaced apart from the incoupling portion in the lateral direction, having a substantially transparent base body which is outside of the incoupling portion and outside of the decoupling portion, wherein the transparent base body has a front side and a rear side, the wave guide having a diffractive incoupling structure in the incoupling portion and the waveguide having a decoupling structure in the decoupling portion, the diffractive incoupling structure being designed to diffract radiation coming from an object to be detected and incident on a front side of the waveguide in the incoupling portion only in part such that the diffracted part propagates to the decoupling portion by reflections in the base body as incoupled radiation, wherein the decoupling structure deflects at least one part of the incoupled radiation incident thereon such that the deflected part exits the base body in the decoupling portion via the front side or the rear side of the base body as decoupled radiation, and wherein the diffractive incoupling structure has at least one diffractive efficiency which continually decreases toward one edge of the incoupling portion.

An optical device includes a light guide and a light shielding portion. The light guide has: an incident surface on which an external scene light coming from a blind area is incident; a first surface including flat portions and prism portions; and a second surface opposite to the flat portions. The light shielding portion is provided on a surface of the light guide or at a position away from the light guide so as to block an outside light entering the light guide. The light shielding portion has a first light shielding portion for blocking light incident on an inclined surface and a second light shielding portion for blocking light incident on the flat portion in a predetermined direction.